Huawei BTS3900L Installation Manual page 39

BTS3900L (Ver.C)
Installation Guide
Figure 8-4 Checking the cabinet level
Step 6 Test the insulation between the cabinet and the expansion bolts.
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Issue 07 (2013-11-08)
Set the multimeter to the megohm position (MΩ).
Measure the resistance between the cabinet and the four expansion bolts, as shown in
Figure 8-5.
Figure 8-5 Measuring the resistance
l If the resistance is less than five megohms, you can infer that the cabinet is not insulated
from the floor. Go to step
l If the resistance is greater than or equal to five megohms, you can infer that the cabinet
is insulated from the floor. End the test.
Decompose the expansion bolt assemblies, and check whether insulating washers are
missing or damaged.
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Step 6.3.
8 Installing the Cabinet
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